GL4 vs GL5, GL4

[Rokas Reipa]

If it says GL-4 on it, it's safe to assume that the corrosive additives that
eat brass synchros are not present. Then again, it must have something else
in there to satisfy the GL-5 requirement as well. It's always safer just to
use GL-4; redline and amsoil both make excellent factory replacement trans
oils. I've been running redline mt-90 in mine with great success.

Rokas
93 100s

>
>
> I'm pretty sure that this reasoning cost me a tranny in my 300ZX, which
> calls for straight GL-4. Straight GL-4 is available from your local NAPA
> dealer.  GL-5 has an additive that eats the brass synchro rings in trannys
> that call for GL-4 so I don't really see how one formulation can be good
> for both.
>
>
>
> George Selby
> gselby4x4 at earthlink.net
>
>